Ключевые слова: aerial, america, blue, border, brazil, brazilian, color image, concrete, conservation, dam, destination, ecological, ecology, electric, electricity, energy, engineering, environmental, famous place, generation, hydro, hydro electricity, hydroelectric, image, industrial, industry, lake, landmark, landscape, large, latin america, mountain, nature, no people, paraguay, photograph, picture, place, power, renewable, renewable energy, reservoir, river, south america, station, stock photograph, turbine, utility, water,